Just for Mex..iiiii..co! Luis Mariano is famous for this song part of the operetta created by Francis Lopez. He had previously sang in La belle de Cadix (also by Francis Lopez, lyrics by Maurice Vandair) : la belle de cadix a des yeux de velours...
Yves Montand (so young in this video) sings this classic song, lyrics by the poet Jacques Prévert and music by Joseph Cosma. The initial poem is longer and frankly the second verse is not very good. That is probably why they did not keep it for the song. You can find the whole poem here. Lyrics Amazon MP3
Francis Lemarque (1917- 2002) wrote the music and the lyrics of this classic song about Paris. The YouTube posting has pictures of Robert Doisneau as illustration.